Предмет: Математика, автор: snezhanaamerxa

Помогите решить уравнение: 1,8х=(х+50)*0,8. Только объясните пожалуйста.

Ответы

Автор ответа: samaura18
1
1.8x=0.8x+40
1.8x-0.8x=0.8x+40-0.8x
x=40
snezhanaamerxa: Я слишком тупая,но почему 50 изменилось на 40 :D
vapvapvap: да, думаю никто с этим не поспорит....
snezhanaamerxa: о боже,какой ты оригинальный.
samaura18: при умножение 50×0.8=40
snezhanaamerxa: спасибо большое
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